Copy GM BCM 13589056 Using OBDSTAR DC706 Tool

 This guide demonstrates how to clone a Vauxhall/Opel GM BCM (Body Control Module) with part number 13589056 using OBDSTAR DC706, including immobilizer data transfer and PIN code extraction. This process is essential when replacing a faulty BCM while retaining original vehicle security data.

Tools Required


OBDSTAR DC706 Clone GM BCM 13589056

Step 1: Prepare the BCMs

Identify Modules:

  • Locate the original (donor) BCM and the new replacement BCM (ensure part numbers match).
  • Verify both are Continental-branded modules (common for GM/Opel).

Pinout Setup:

Select GM BCM Continental 70F3469 +95160 option.

  • Refer to the wiring diagram for correct connections:
  • Pin 1: Ground (GND)
  • Pins 4 & 5: 12V Power
  • Pins 23 & 24: CAN Low/ CAN High

OBDSTAR DC706 Clone GM BCM 13589056
OBDSTAR DC706 Clone GM BCM 13589056

Step 2: Read Data from the Original BCM

Power Up:

  • Connect the original BCM to the OBDStar DC706 tool using the wiring harness.
  • Apply 12V power to Pins 4/5 and ground to Pin 1.

OBDSTAR DC706 Clone GM BCM 13589056
OBDSTAR DC706 Clone GM BCM 13589056

Extract Data:

  • Open the OBDStar software, navigate to GM > Body Control.
  • Select "Read EEPROM" and save eeprom data.
  • Select "Read Flash" to back up the flash data.
  • Retrieve the PIN code (e.g., 0427 in this case) and note it down.

OBDSTAR DC706 Clone GM BCM 13589056
OBDSTAR DC706 Clone GM BCM 13589056
OBDSTAR DC706 Clone GM BCM 13589056
OBDSTAR DC706 Clone GM BCM 13589056

Step 3: Write Data to the New BCM

Switch Modules:

  • Disconnect the original BCM and connect the new BCM using the same wiring.

OBDSTAR DC706 Clone GM BCM 13589056

Transfer Data:

  • In OBDStar, select "Write EEPROM" and load the saved backup file.
  • Select "Write Flash" to transfer the firmware.
  • Note: Skip backup for brand-new modules (no existing data to preserve).

OBDSTAR DC706 Clone GM BCM 13589056
OBDSTAR DC706 Clone GM BCM 13589056

Verify PIN Code:

  • Read the PIN code from the new BCM to confirm it matches the original

OBDSTAR DC706 Clone GM BCM 13589056

Step 4: Final Checks

  • Disconnect all wiring and power.
  • Test the cloned BCM in the vehicle:
  • Ensure the immobilizer recognizes the keys.
  • Check for fault codes (clear if necessary).

Done.

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